Maths solution perimeter of a rectangle is 100 cm. One side is 20cm.What is its area in square cm
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breadth=20cm
length=l
perimeter of rectangle =2(l+b)
100=2(20+l)
100=40+2l
2l=70
l=30
Area of rectangle= l×b
=30×20
=600cm^2
length=l
perimeter of rectangle =2(l+b)
100=2(20+l)
100=40+2l
2l=70
l=30
Area of rectangle= l×b
=30×20
=600cm^2
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